/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package fr.uha.ensisa.kfetmanager.product;

import java.io.IOException;
import java.io.PrintWriter;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Sébastien Szymanski
 */
public class GetProduct extends HttpServlet {

    @EJB
    private ProductManagerRemote productManager;

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
	    throws ServletException, IOException {
	response.setContentType("text/html;charset=UTF-8");
	PrintWriter out = response.getWriter();
	try {
	}
	finally {
	    out.close();
	}
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
	    throws ServletException, IOException {
	processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
	    throws ServletException, IOException {
	String idString = request.getParameter("productId");
	Long productId;
	Product p;

	try {
	    productId = Long.valueOf(idString);
	}
	catch(Exception e) {
	    response.sendError(response.SC_BAD_REQUEST);
	    return;
	}

	try {
	    p = productManager.getProduct(productId);
	}
	catch(Exception e) {
	    response.sendError(response.SC_INTERNAL_SERVER_ERROR, "Erreur lors de la recherche du produit");
	    return;
	}

	response.setContentType("text/xml;charset=UTF-8");
	PrintWriter out = response.getWriter();
	try {
	    out.println("<product>");
	    if(p != null) {
		out.println("<name>" + p.getName() + "</name>");
		out.println("<price>" + p.getPrice() + "</price>");
	    }
	    out.println("</product>");
	}
	finally {
	    out.close();
	}
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
	return "Short description";
    }// </editor-fold>
}
